Tension device.



W. S. WELLS.

TENSION DEVICE.

APPLICATION FILED APR. 25, 1910.

1,055, 108. Patented Mar. 4, 1913.

I WITNESSES:

nv/vroR,

ATTORNEY.

UNITED STATES PATENT OFFICE.

WILLIAM S. WELLS, 0F FOUNTAIN HILL, PENNSYLVANIA, ASSIG-NOR TO THE SIPPELECTRIC AND MACHINE 00.,

0F PATERSON, NEW JERSEY.

TENSION DEVICE.

Patented Mar. 4, 1 91 3.

Application filed April 25, 1910. Serial No. 557,396.

7 '0 all whom it may concern:

Be it known that I, WVILLIAM S. l/VnLLs, a citizen of the United States,residing in borough of Fountain Hill, Lehigh county, and State ofPennsylvania, have invented a certain new and useful Improvement inTension Devices; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as Wlll enableothers skilled in the art to which it appertains to make and use the salne, reference being had to the accompanying drawings, and to letters ofreference marked thereon, which form a part of this specificat-ion.

My present invention relates to tension devices of the nature of thatset forth in my U. S. Letters Patent No. 739523, dated September 22nd,1903, and it consists 1n certain features of construction and relativearrangement of parts having for their object to improve the control ofthe thread and perfect the device as a practical attachment for anyorganism in connection with which it may chance to be used.

In the accompanying drawing, Figure 1 is a plan view of the improveddevice and a part of its supporting means; Flg. 2 1s a sectional view onthe line scm of Fig. 5;

Fig. 3 is a plan view of the device with its top or cover removed; Fig.4: is a front elevation of the cover; and, Fig. 5 is a centrallongitudinal sectional View of what is shown in Fig. 1.

a a designates two rods forming a part of a suitable support which maybe included in the machine in connection with which the tension deviceis used.

I) is a base member formed substantially rectangular in plan and havingthe downwardly depending flange c, the two longer sides of which arerecessed, as at cl, to seat and fit upon the bars a. The member I) isformed with a rectangular opening 6 and its upper surface is formed withthe transversely extending channels f which are relatively wide andcurved in cross-section.

In the opening 0 fits a thread contact member 9 preferably of glass,said member in plan being rectangular. The member 9 is fluted orcorrugate, being composed of a plurality of part-cylinders (in theadaptation shown integral with each other) all lying in the same planeand having their concave sides faced upwardly. The member 9 may besupported in the opening a by the concave flanges or seats 2' projectinginwardly from member 6 at the ends of openmg 0.

Substantially in alinenient with the longitudinal central axis of member9 are disposed pig-tails or thread-guides j, the same being screwed intothe member 5. These form guides for the thread, which extends over thethread contact member as shown in Figs. 1 and 5. One or morecross-sectionally round elongated weights h, each movable longitudinallyof the thread, is or are arranged in each of the channels formed in themember g, resting upon the thread, the ends of such weights beingreceived. in the channels f. It should be remarked that the surface ofeach channel in the member 9 is a trifle higher than the surface of thecorresponding channel f, allowing a teetering movement of the weightswhen the tension device is in action.

A hollow rectangular cover 11 is designed to be supported upon themember I), the same being open at the bottom and also having asubstantially rectangular opening m in the top thereof. One long side nof the cover Z is extended somewhat below the edge of the other longside and bears against the outer face of the corresponding long side ofthe base 7), the cover being secured to the member I) by a screw 0 whichis tapped into member I) and is received by a slot 79 in the side a ofmember Z. This arrangement permits the cover to be readily removed uponloosening the screw 0. The short sides of member Z are recessed, as atg, so as not to produce wear upon the thread.

1' designates vertical ribs projecting from the inner face of each sidea of member Z and coinciding with the elevations in the member 9, theirfunction being to prevent the weight or weights in one of the recessesof member 9 from working over into the next adjoining recess.

The opening m is made of such size, that, while it will perfectlyprevent the weights from being ejected thercthrough as they are agitatedby the thread, itwill permit their manual removal, one after the other,upon turning them to the proper angle.

It will be noted that the ends of the memher 9 lie under the recessedend walls of the cover, so that the cover acts to retain not only theweights in their proper relation to the member 9 but within the opening6 in which it is, in effect, countersunk; thus the device may be removedand its parts made to keep their proper relation to each other inhandling. The device rests loosely on the bars a and in order to gageits position with respect to the medium which is advancing the thread,it has a lug or lugs s engageable in a recess or recesses t in the barsa.

Having thus fully described my invention,

what I claim as new and desire to secure by Letters Patent is:

1. In a tension device, the combination of a supporting member having inits top surface a channel formed with its sides converging downwardlytoward each other, means for guiding the thread across said channel, anda cylindrical roller adapted to bear on the thread from above andresting in said recess, the diameter of, the roller being limitedrelatively to the width of said channel, whereby the roller will haveappreciable movement under the draft of the thread crosswise of thechannel, substantially as described.

2. In a tension device, the combination of a supporting member having inits top surface a recess formed with two opposed sides thereofconverging downwardly toward each other, means for guiding the threadacross said recess and crosswise of each of said sides, and a pluralityof weights adapt-- ed to bear on the thread from above and resting insaid recess in contact with said sides and being free to move in saidrecess and relatively to each other in the direction of the line ofthread travel and from sub stantially side to side of said recess, saidrecess being wide relatively to the weight, substantially as described.

In testimony, that I claimthe foregoing I have hereunto set may handthis 7th day of April, 1910.

WVILLIAM S. WELLS. Witnesses H. M. UEBERROTH, J. A. TITLow.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, .D. C.

